Not even Fidel Castro believed the nice things Michael Moore said about Cuba’s health-care system.

Moore’s positive depiction of Cuba’s cradle-to-grave health-care system in the 2007 documentary “Sicko” seemed so “mythical” that Castro and government officials decided to ban the film, according to the latest leaked US diplomatic cables.

Cuba’s government “knows the film is a myth and does not want to risk a popular backlash by showing to Cubans facilities that are clearly not available to the vast majority of them,” a US diplomat wrote in 2008.

The gleaming treatment center Moore visited is reserved for high-level government officials and foreign tourists — and ordinary Cubans are banned, the cable posted on WikiLeaks said.